EU protected area network did not prevent a country wide population decline in a threatened grassland bird

PeerJ

article

João P. Silva¹  Ricardo Correia⁴  Hany Alonso⁷  Ricardo C. Martins¹  Marcello D’Amico¹  Ana Delgado²  Hugo Sampaio⁸  Carlos Godinho⁹  Francisco Moreira¹ 

[1] REN Biodiversity Chair, CIBIO/InBIO—Research Centre in Biodiversity and Genetic Resources, University of Porto;CEABN/InBIO—Centre for Applied Ecology “Prof Baeta Neves”, Institute of Agronomy, University of Lisbon;cE3c—Centre for Ecology, Evolution and Environmental Changes, Faculty of Sciences, University of Lisbon;Institute of Biological and Health Sciences, Federal University of Alagoas;School of Geography and the Environment, University of Oxford;CESAM—Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro;CIBIO/InBIO—Research Center in Biodiversity and Genetic Resources, Pólo de Évora, University of Évora;SPEA—Sociedade Portuguesa para o Estudo das Aves;ICAAM—Instituto de Ciências Agrárias e Ambientais Mediterrânicas, Universidade de Évora, Laboratório de Ornitologia

关键词: Farmland birds;    Effectiveness;    Little bustard;    Natura 2000;    Protected area network;   

DOI  :  10.7717/peerj.4284

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundFew studies have assessed the effectiveness of the Protected Area networks on the conservation status of target species. Here, we assess the effectiveness of the Portuguese Natura 2000 (the European Union network of protected areas) in maintaining a species included in the Annex I of the Bird Directive, namely the population of a priority farmland bird, the little bustard Tetrax tetrax.MethodsWe measured the effectiveness of the Natura 2000 by comparing population trends across time (2003–2006 and 2016) in 51 areas, 21 of which within 12 Special Protection Areas (SPA) that were mostly designated for farmland bird conservation and another 30 areas without EU protection.ResultsOverall, the national population is estimated to have declined 49% over the last 10–14 years. This loss was found to be proportionally larger outside SPA (64% decline) compared to losses within SPA (25% decline). However, the absolute male density decline was significantly larger within SPA .DiscussionIn spite of holding higher population densities and having prevented habitat loss, we conclude that Natura 2000 was not effective in buffering against the overall bustard population decline. Results show that the mere designation of SPA in farmland is not enough to secure species populations and has to be combined with agricultural policies and investment to maintain not only habitat availability but also habitat quality.

【 授权许可】

CC BY